It is a Prototype which had Datsun 1200 hubcaps. The motor was electric. It was built for US Postal Service delivery van trials.

The production Harbilt USPS truck was first tested at Cupertino, California in 1971 and was still in service in 1982. Cupertino switched its entire fleet of about 30 delivery vans to Harbilt. Later versions did not sport Datsun 1200 hubcaps. They had far more low speed power than regular cars, but very low high speed power. Topped out about 30 mph. But accelerated 0-10 mph very fast.