I’m very intrigued by the Syncro Rev Match feature in the 370Z 6-speed transmission. My Dad had an ancient Chevy convertible and he would sometimes shift the 4 speed without using the clutch pedal. He’d be putting along, and instead of disengaging the clutch in preparation to shift gears, he would just blip the throttle to create some slack in the driveline and nudge the shift lever into neutral. He would then bring the engine RPM up to a point that exactly matched the appropriate road speed for the gear he was shifting into and just pop it into gear.
When I was 16 he bought me an old MGB. Notwithstanding all their faults, these cars had very slick shifting and robust transmissions and a nice, big, clear reading tach & speedo. Dad could both up and down shift this car with aplomb sans clutch pedal. Remembering what RPM, matched to what road speed in what gear and all, was way beyond anything I could understand, so I never wanted to try that trick. Dad told me that the easiest gear to rev match was fourth, as it was a one-to-one ratio. He had me drive in fourth at a steady 30 mph and note the exact rpm on the tachometer. He then told me to slow down and in third gear accelerate back up to about 33 mph, fall off the throttle and nudge the gear lever into neutral. As the MG coasted along, I brought the engine speed up to the aforementioned RPM and when the speed dropped to exactly 30mph, I pulled the gear lever into fourth and sure enough, a perfect engagement. That was only one gear, and only on the up-shift, I was just too spazzy to ever try a more difficult down shift.
If the 370’s computer can exactly match up road and engine speeds, someone with a smooth gentle touch should be able pull off a few clutchless shifts. That’d sure an icebreaker with the salesman on a new car test drive!