Since there are a lot of redshirts with the team this time around, maybe the good guys could take some casulties?
Also, how is the car chase going to fit with the bomb subplot? Will the heroes have to race back to Pelvanida after the car chase to save the base?
If you need them to find out about the bomb some way, Shelton could radio James after Lab 101 gets away on his radio-flashlight and warn him about the bomb. The heroes would think they were done, and then they'd have to race back to save the rest of the Pelvanida staff. Og course this wouldn't happen for a long time, once we've milked the car chase for as much action as we possibly could.