Hi,
GM sales dropped ~47%, Chrysler & Toyota somewhat less, Ford ~34%, and I think Honda was ~30%; so they are doing the least bad of the Big Five.
[Edit: You're right Frank -- the correct numbers are:
Chrylser -47%
(From your link: Nissan -42%)
GM -41%
Toyota -34%
Honda -32%
Ford -31%
http://www.npr.org/templates/story/s...oryId=97690666
So, Ford is the least bad...]