[bradleyjg]

That may be a plausible reading of the commerce clause in conjunction with the 10th amendment, but it is not the one currently in force.

In cases such as Wikard v Filburn and Raich v Gonzalez, the Supreme Court has held that Comgresses power to regulate extends to any activity which, in the aggregate, substantially effects interstate commerce. Such a test is trivially met by state laws forbidding the sale of automobiles directly from manufacturers to the public.