take the low-way.

I think this is actually a fairly humorous and clever metaphor. I'm not certain that it's never been done before, but I do know I've never come across it, certainly not in such depth.
Not content merely with the statement, "my love is like a runaway car," or something similarly simple, you've gone into detail about just how it is like a runaway car, and the road it is on: fast, exhilarating, perhaps, and dangerous.
I believe you could clean it up a little but... there are a few odds and ends that jarred me, somewhat, such as "I ignore the signs/imploring me to slow down/when this rush I can't ignore." Perhaps "but this rush, I can't ignore" would flow better, but that may just be me.
Similarly--and again, this may be just me--I prefer more punctuation... unpunctuated poetry tends to throw me, leaving me unsure where to pause, and so on.
I like it a lot, and I think with a little work, it could go from a decent piece, to an excellent one.