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  <xsd:element id="sev_PrepaidExpenseAndOtherAssetsExcludingPrepaidTaxesCurrent" name="PrepaidExpenseAndOtherAssetsExcludingPrepaidTaxesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
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  <xsd:element id="sev_ResearchAndDevelopmentExpensePersonnelExpenses" name="ResearchAndDevelopmentExpensePersonnelExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
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  <xsd:element id="sev_ScheduleOfSellingAndDistributionExpensesTableTextBlock" name="ScheduleOfSellingAndDistributionExpensesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="sev_statement-statement-note-5-property-plant-and-equipment-summary-of-property-plant-and-equipment-details" name="statement-statement-note-5-property-plant-and-equipment-summary-of-property-plant-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="sev_statement-statement-note-6-leases-maturities-of-operating-lease-liabilities-details" name="statement-statement-note-6-leases-maturities-of-operating-lease-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="sev_statement-statement-note-8-convertible-notes-payable-at-fair-value-convertible-debt-details" name="statement-statement-note-8-convertible-notes-payable-at-fair-value-convertible-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
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  <xsd:element abstract="true" id="sev_statement-statement-note-8-convertible-notes-payable-at-fair-value-fair-value-measurement-inputs-and-valuation-techniques-details" name="statement-statement-note-8-convertible-notes-payable-at-fair-value-fair-value-measurement-inputs-and-valuation-techniques-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sev_statement-statement-note-8-convertible-notes-payable-at-fair-value-schedule-of-debt-details" name="statement-statement-note-8-convertible-notes-payable-at-fair-value-schedule-of-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sev_statement-statement-note-8-convertible-notes-payable-at-fair-value-schedule-of-debt-details-parentheticals" name="statement-statement-note-8-convertible-notes-payable-at-fair-value-schedule-of-debt-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sev_statement-statement-note-8-convertible-notes-payable-at-fair-value-schedule-of-debt-details5823E444-4F87-4E5A-8C36-C11023BD6B34" name="statement-statement-note-8-convertible-notes-payable-at-fair-value-schedule-of-debt-details5823E444-4F87-4E5A-8C36-C11023BD6B34" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sev_statement-statement-note-8-convertible-notes-payable-at-fair-value-tables" name="statement-statement-note-8-convertible-notes-payable-at-fair-value-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sev_statement-statement-note-9-shareholders-equity-option-activity-details" name="statement-statement-note-9-shareholders-equity-option-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sev_statement-statement-note-9-shareholders-equity-tables" name="statement-statement-note-9-shareholders-equity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="sev_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
