Auburn 521 Speedster
To my mind this is the best looking car I have ever seen.
If you want to see it in its full glory, rather than just the hints of its shape that I have given you here, then look at it here.
Alternatively, you can go and see it at the National Motor Museum in Beaulieu, Hampshire.
Either way, I think that I were to be run over by this car I would still be admiring the underside as it went over me.