If you are, say, over the age of three, chances are someone has told you not to climb into a van, parked in an alley, with a bunch of strangers. But this was for science, mom, and the very nice trio that beckoned a reporter within turned out to be rather entrepreneurial spirits, who just want to create a good night’s sleep. A good night’s sleep in any context, really, but especially for the 23 passengers they hope to pack into bus rollicking down a California freeway.