The "as their next purchase" part of that option seems like it would seriously distort the results. I'm sure plenty of those people were thinking "I don't think

The "as their next purchase" part of that option seems like it would seriously distort the results. I'm sure plenty of those people were thinking "I don't think I'd trust a self-driving car that came out today, but it's be pretty cool to get one later once I know they work well".