Lamborghini Invencible and Auténtica supercars mark end of pure V-12 era

Lamborghini has rolled out a pair of one-off supercars that will go down in history as the automaker’s last to be powered solely by a V-12 engine, at least as far as road cars are concerned. The new Invencible coupe and Auténtica roadster revealed on Monday are both based on Lamborghini’s Aventador supercar which bowed out of production…