They have done a feature blog post on Car Manufacturer Logo Designs. Right up my alley!
A bit more searching and I came across Car Type which has a section on car badges and hood ornaments and their evolution.
There is a great section on car posters and advertising, however their collection leans more towards the modern day cars rather than the vintage or classic cars that I am interested in. A quick search on Flickr might give you more rewards in this area.
Designer Daily had a great article on the evolution of the car badges, so interesting to see what happened to them during the war years.
Now all I need to do is work out how to integrate this into my love or patchwork and quilting ...