Spark plugs

In writing about green, fuel-efficient, and advanced technology cars, it's important to understand who buys them--and why. Volkswagen, for instance, found that diesel and hybrid buyers are separate groups with little crossover. Now Toyota suggests that the supporters of hydrogen fuel-cell vehicles may also be quite different from those who advocate for, and buy, plug-in electric vehicles. At the Toyota Hybrid World Tour, held in Michigan two weeks ago, we spoke with Mary Nickerson, the company's national advanced products marketing manager. Toyota strongly believes that hydrogen fuel cells...