I am thinking about ordering a Hot Lap Timer setup... I want something that will show me lap times while on track (for immediate feedback on the laps). Is that the best in-car timer? How hard is it to setup a Hot Lap transmitter at MSR or TWS or most other tracks? MSR has an AMB Timer setup in the track... but AFAIK there is no option for in-car display of track times with that... plus, its not clear where you'd install the transponder on a car with a solid sheet of carbon fiber on the bottom. Suggestions?