Here's The Fast Lane Car's review of the BMW i3 REx.

"The 2015 BMW i3 is an electric car that can also be purchased with a range extending gasoline engine. In this TFLcar review Nathan and Emme spend a day living and testing BMW's least expensive EV."

It's worth point out that $54,000 is not the price that typical i3 REx buyers pay these days. With dealers incentives and some haggling, most buyers can knock $10,000 off that number, maybe even more and lease deals are enticing too.