There are a few routes I take where the speed limit is 65. Got tired of calculating using the tach.(made my head hurt) ? Anyway, I saw this digital speedo that plugs into a USB port and couldn't believe the price. $8.50 !!!! I had no idea these things were that cheap. I gotta get out more!?
Tried to copy the link. Looked like a full page of characters and it didn't take you there.?? Anyway, go to Temu.com. Type in GPS speedometer. There's several styles.