Basis of Presentation and Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	1 year
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years
Computer hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Computer hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Demonstration fleet and demonstration units | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	2 years
Demonstration fleet and demonstration units | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Vehicles, including demonstration fleet
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years
Tooling
Property, Plant and Equipment [Line Items]
Capitalized costs	$ 0	$ 0
Tooling | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	1 year
Tooling | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years