Although auto insurance costs vary widely depending on where you live, how many accidents you've had in the past, how many miles you drive each year and so on, the kind of car you drive also helps insurers make decisions about you. To help out, we've compiled a list of the 10 trucks most likely to command the highest insurance premiums based on five-year projections of the Edmunds.com True Cost to OwnSM (TCO) pricing system. Many of these vehicles are expensive to buy anyway, so if you're wealthy, a few thousand dollars more won't seem like a big deal. But if you're scraping together all your assets to buy one of these, keep in mind that you've got to budget for insurance costs as well.