Does the XO - 1 use a gps sensor to measure its speed or is it based off a sensor on the drivetrain?
By the looks of it without the body on I would say it's a sensor on the drivetrain. Much like Spektrum's telemetry system.
Ok that's what i thought so if you set the car up on a pedastool you could make it say it went "100 mph +" (prolly smoke your engine cause of no airflow lol). But long story short you'd either need to get a gps, gps attachment for the telemetry system or radar gun so that you could have the most accurate speed measurement.