I can't figure out what that guy is talking about with the New Garmin Sensors- I assume it's the new ones that separate speed and cadence- with speed mounting on the wheel hub.. I've had zero issues with mine. The fact that he says it didn't work indoors makes me wonder if he was actually running gps speed data... I have no issues with the new sensor and really like not having a magnet or anything mounted on the fork blade.
Intervals with the garmin is a pain.
What you (we) need is a "Speed Max Lap" and a "Cadence max lap" screen... They don't exist...which is weird because there is a "Power Max Lap" screen..