The best replacement for speedometer is gps.

The best alternatives to speedometer are rated as following:
★★★★★  gps
★★★★★  odometer
★★★★  tire size
★★  sat nav
★★  gps accuracy
★★  gps speed
★  tachometer
★  gps more accurate
★  actual speed
★  speedometer
  tire size calculator
  garmin speedometer

Your alternative for speedometer is not listed? Suggest!
Speaking about speedometer, one probably shouldn't forget about gps.

Other search terms related to speedometer and their ratings are:
★★★★★ gps
★★★ tachometer
You have in mind a companion for speedometer and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of speedometer in all years. Click on graph for more.
speedometer
gps
odometer