Bastard Stalled Again

The curly haired dude is Michael Lang, organizer of the big Woodstock peace, love, music deal . . . My question is:  If he's using this BSA as his "pit bike" . . . how'd he get this thing started and going the whole time?  They are known to start hard . . .  those 441 Victors are really a bitch, aren't they?  Maybe that's why she's smiling?  He appears to be concentrating pretty hard.  Where's the bike now?