Car makers have an interesting quandary to solve. On the one hand, everyone, including governments, demand more environment-friendly output from their cars. On the other hand, buyers and loyal fans also demand at least the feelings and sounds of a traditional gas-powered engine. Striving to combine the best of worlds, the plug-in hybrid model was born. Soon, BMW premium MINI brand will be joining that balancing act, unveiling its first combined combustion engine and electric motor that is obsessed about “driving fun” as it is about efficiency.