Piper Cars was a late-sixties dream that never reached the heights of Marcos or TVR, ... while Piper also took a new mid-engined Group 6 racing car called the GTR to the 24 Hours of Le Mans.

Piper had identified this market segment by the mid-1960s, ... GTR 225 com radio, GTX 345R transponder with ADS-B In and Out, TruTrak Aerocruze 100 autopilot, Apollo GPS 2001, ...