The Tesla Model S and BMW i8 both plug in to recharge their battery packs, and they can both carry six-figure price tags. They're also from two of the most forward-looking and technology-focused brands in the world. Beyond those factors, the all-electric luxury sedan and the plug-in hybrid sport coupe are hugely different. One can carry up to seven people (if two of them are age 10 or younger), the other holds just a pair of passengers and not a whole lot of luggage. So which is right for you? The primary reason I didn't buy the 2016 model of the XC90 is that Volvo substantially upgraded Pilot Assist in the 2017 model: it no longer requires a lead vehicle to follow and it works at speeds up to 87 mph (vs. only 30 mph previously). So it was with great anticipation that I put the new Pilot Assist through its paces the last two weekends.