Hi,
the sheild idea could work. Here’s an idea I came up with after reading a comment here. This one plays on heraldry - using three side flashes as replacements for lions (or the Essex scimitars.... ). The three flashes are a striking feature of the car, and they may well tie the logo with the car without being too overworked.

Reading Ken’s comments, we could use a pared down or modified version of the alternative Crossfire logo. I think it may not scale down too well in its current form - the logo will have to work in a variety of places and sizes - and having it display nicely on a web site would be a challenge (the thumbnail in Ken’s post shows that it’s on the brink of survival at that size it is - now imagine it smaller). A silhouette of the car in place of the flashes may be worth considering.

I have lost count the number of times I’ve had to educate clients about their over complex logos not working comfortably on a web site just down to the low resolution of displays not being able to cope can’t be counted. Simplicity is in order here.

Speaking of overworked, I’d better knuckle down to what I’m meant to be doing....