A fire at a warehouse owned by Neil Young started in a 1959 Lincoln Continental car he had converted into a hybrid vehicle, authorities have said.
Fire crews said they saved about 70% of contents in the San Francisco Bay area warehouse including cars, guitars and memorabilia in the 9 November blaze.
The fire caused damage estimated at $850,000 (£534,000) to his possessions.
Young said he was committed to rebuilding the damaged car which he converted to promote fuel efficiency.
No-one was injured in the fire which Young blamed on human error.
"The wall charging system was not completely tested and had never been left unattended," he said in a statement.
"A mistake was made - it was not the fault of the car."
Young had customised the car - dubbed the LincVolt - to run on batteries and a generator powered by bio-diesel.
The project was chronicled on the website LincVolt.com and in a four-part series of films.