Engineering is intense. Turning a Saturn VUE into a next-generation vehicle takes skill, intelligence and commitment. Okay, it’s also a lot of fun. So, in the spirit of racing toward sustainability, the EcoCAR team members spent last evening racing around a track at F1 Boston. Today, they were back in workshops poring over information on optimizing vehicles for fuel economy, performance and emissions, but, as you can see by the pictures below (thanks to Martin Velilla), last night it was all about EIL – Engineers-in-the-Loop, a figure-8 loop that is.