What increments does your speedometer have?
My nice old car has speed increments every 10 MPH, and even has a handy 55 MPH mark.
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I've noticed that many newer cars have these increments in 20 MPH.
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What does yours have? And what year is your car?
And why the heck did they start doing this in the first place, besides to save paint? I think I'd be annoyed having to try to do quick mental math at cruising speeds - seems like it would be pretty distracting.
light speed, ridiculous speed, ludicrous speed, and plaid.
Mines a little newer. 5 mph increments. But you gotta love the ol' Jimmy Carter, 55 mph marker. "55, stay alive!"
1990 Nissan 300ZX. It has markers every 20mph.

My '94 Jeep has markers every 10 mph, starting at 5 and going up to 85. I guess I can't ever use it to travel through time.
My '96 Sable has markings every 10 MPH as well. This change is probably a result of speedometers getting smaller (many are now closer to half circles than full circles) and increased printed top speeds (to look sporty).
I wouldn't worry about it too much, though. Pretty soon all new cars will have digital readouts.
I would guess that the way each vehicle is marked would depend more on the automaker (GM, Ford, Chrysler Group LLC, Toyota, etc.)not so much on the year.
@clarinerd: I really hope the car manufacturers don't go to all digital dash boards. I personally find digital speedometers more difficult to read. If I'm just glancing down to check the speed, I find it much easier to figure out by needle position. I know it sounds kinda weird, but that seems to be just the way my brain works: "Needle at X position" = my speed is okay or too fast or too slow. With a digital readout I seem to have to "translate" the number and that takes a bit longer.
@gt0163c: Some luxury cars today replace the entire cluster with a screen that can display digital readouts or virtual gauges depending on driver preference. As LCDs continue to get better/cheaper I could see this becoming a wide-spread thing. So it could be ok.
My car is actually Canadian built (live in SoCal) and has increments. It hasn't happened yet but I think If I ever got pulled over for going 58 in a 55 I think I could talk my way out of it because it's impossible to really tell because I have MPH markers every 20 mph (with dashes at the 10s)
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