Luscious Garage

Already have a hybrid? There's always room for improvement. San Francisco's Luscious Garage ("luscious" because it's "a beautiful facility, woman-owned and operated"; "garage" because it's a place that works on cars) will convert your Prius into a plug-in hybrid for $7,500. They also offer a wide array of other Prius mods. For $30 they'll turn off that annoying beeping when you drive in reverse. Definitely worth it.