Recently had a 2 hour endurance race using the Plasma LM. What-A-Blast!
Everyone ran the same 30.5 motor and stayed within a certain roll out range. Using lipo stick packs and kit tires. After the 2 hours and 473 laps my team came out victorious!
There were 5 teams consisting of 2 racers, racers were paired based on drivers skill. Highest paired with lowest skill. This made the competition fun and unpredictable. During the race, each racer can only race for 15-20 minutes each time and then they must switch. When we did switch, we switch out the battery and sometimes made roll out adjustments. Their were no battery dumping issues, I'm pretty sure the lipo batteries can last easily 30 minutes. The motors never ever got hot, after the two hours they were lukewarm.
The best time to race them is at night, with the included light system. Sooooo cool.