This sounds riddiculous but which would be a wiser rental: a BMW X5 or 740i? I know they are quite different vehicles but I drive an SUV regularly and I kinda like the thought of getting a sedan for a couple weeks. However will the 740 be a pig on gas in comparison? Also will I feel like an old man driving it? I'm 32. It's a rental from FLL at the end of March so I just might fit in with all the old foggeys from Boca