In 1973 I had a Pantera was trying to make it Phoenix, Arizona from L.A Calif. in less than 3 hours was at 154 and 148mph the whole way got caught in traffic into Phoenix or I would have made it, I had all the smog stuff removed and some slight mods. I could drive from San Francisco to L.A. cruise at 135 mph and got 34 miles per gallon. loved that car.