What scale are those Great Escape cars? Calling them 28mm etc. doesn't help much, as some manufacturers have come out and said that such measurements are now more like sayings than information.
At any rate, the only later vehicles I can think of right now are RAFMs CoC Classic miniatures roadster; certain special collectible Hot Wheels offered in unusual sizes, often with annoying low-profile wheels and redwall tyres; or various 1/43 diecasts, which to me look too big but many swear by them as they use rules based on the assumption that the character represented by the figure can't duck, simply because the figure can't.
These are the most accessible:http://www.amercom-hobby.com/index.php?route=product/category&path=64
Although, I have not tried to order any yet, having only bought them when the range was available over the counter in Australia.