 The current Z-Car is the 300ZX, the successor to the less powerful 280ZX.It is powered by a 3.0 V6 engine that gives strong performance well in excess of 130 mph, making it a real competitor for the likes of the Toyota Supra and Mazda RX-7.But many enthusiasts still loyal to the 240Z of old have yet to accept it as a true successor to those classic old-timers.