I could never understand why activists picked on the personal automobile so much. Sure, people die in accidents. The car also uses a lot of oil and spews a lot of pollution. But so do planes, ships and lots of other machines. And won’t gasoline cars soon be replaced by cleaner hybrids or even 100% clean electric vehicles? Now, after reading “Stop Signs,” I can see the problem — as the main gateway drug to excessive consumption of everything from suburban homes and appliances to self-storage, more than anything else, the auto literally drives climate change and peak oil.