Hyundai Elantra: To resume cruising speed at more than approximately 25 mph (40 km/h)
If any method other than the CRUISE ON-OFF switch was used to cancel cruising speed and the system is still activated, the most recent set speed will automatically resume when the RES/ACCEL switch is pushed.
It will not resume, however, if the vehicle speed has dropped below 25 mph (40 km/h).