Will it be cheating on her?

I can't get into modern muscle cars. I've had one modern performance car, but not a muscle car (2004 BMW 330Ci convertible). The BMW did EVERYTHING better than my old convertibles, but you know which one I gave up to buy a more modern fuel efficient sedan that also does NEARLY everything better than the old cars. BUT, if my Barracuda was road worthy and done I would really rather have it here on vacation even at the expense of much more fuel (maybe 15mpg vs. 45mpg on the highway).