Why buy a hybrid vehicle?

Umm. Do you really need to ask?

That's a question I hear regularly. This morning a man asked this question and then provided a list of small vehicles sold outside the US that achieve better fuel economy than the Toyota Prius. Yes, most were smaller-than-the-Prius diesels, and they outperformed the Prius primarily in highway fuel economy.

So, why buy hybrid vehicles?

I say forget that a diesel vehicle could be a hybrid vehicle. Forget that even clean diesel is still dirty. Forget that it takes more oil to make diesel than gasoline, thereby offsetting much of diesel vehicle efficiency, at least for those concerned about oil dependency, especially foreign oil dependency.

I advocate for hybrid vehicles because neither diesel, nor gasoline, will ever end US foreign oil dependency. On the other hand, hybrid cars are all about batteries, and battery R&D will lead to 100 mpg hybrids, well over 100 mpg plug-in hybrids and full electric vehicles.

I mean, really, don't pollution, global warming and foreign oil dependency provide enough reasons to support hybrid cars?