I used to have lots of fun on the freeways in the late ‘60’s and early ‘70’s. My roommate’s father in law had a 1970 Porsche 914-6, yellow with black vinyl top. Steel wheels, totally stock appearing. Except the motor was built to road racing specs with six Weber injectors, a roller crank and hot cams producing about 300 h.p. with a redline of 9,500. We used to take it out on the I-5 north of San Diego to exercise it. We would be cruising in the slow lane about 70 when invariably some Mustang, Camaro, or Datsun Z Car would pull up and the driver or passenger would make the universal “let’s race” sign. So my buddy would give the thumbs up and smoothly shift the Porsche from 5th to 3rd which was about 5,500 and when both cars took off, the other car would reach about 100 and then my roommate would shift into 4th and wind it out to 130-140 in a couple of seconds and the opponent would fall back into the right lane never to be seen again.
I got into a race with a 280Z on I-10 just west of Phoenix in 1981. I was coming up on 100 mph in 4th, but the Z was pulling away. So I slammed it down into 2nd, tached up, back to 3rd, then 4th all in less time than it took to type this, and was GONE! That Z never had a chance...