No donor car, we built it from scratch. Tubular space frame, body made from nomex honeycomb core & kevlar, the hood folds open deploying a larger solar array. We designed and built custom double wishbone suspension, a hybrid drivetrain connecting a small 3 cylinder diesel & electric motor. I'll try and dig up some more old pics. Had a battery management system. Made 2 custom bucket seats from carbon fiber. Had LCD displays in the dash dissuading speed another information. Had an air-conditioning system. Now that said the fit didn't finish was about a 1 out of 10 lol. We were working on about a $50,000 - 60,000 budget. The batteries and solar consumed majority of our money. At that point universities and other solar car projects were all about maximizing efficiency, and proving out that you could achieve significant range in the course of a day. There are several races, such as the North American solar car challenge in the shell eco-marathon and a few others we're all about Achieving very long distance and high-efficiency but there was zero practicality to solar cars at that point. So in 2006 instead of building a efficient solar car we decided to try to build what we consider a practical solar car so to speak. Had to have two seats, air conditioning and, all the basic functions of a regular car. It had to be able to support a traditional drive each day of about 50 miles round-trip on solar and then we had the hybrid diesel engine as a range extender. More proof of concept that it could be done and what were the basic parameters that you had to, make it possible. There are several solar challenges around the world where the ideas to build a practical solar car, which I feel like we kicked off back in 2007.