If you have any doubt about Apple’s continued momentum, check out the company’s unit Mac sales for May — which jumped more than 50 percent. Somebody call Mel Brooks. Apple’s momentum has accelerated passed Ludicrous speed. Steve Jobs has gone to Plaid. Here’s why.

Barron’s does a nice job summarizing Apple’s Mac momentum with tidbits like this:

On June 1, The VAR Guy noted that open source users were responsible for purchasing many of the new Macs. But readers weighed in, and said Microsoft missteps coupled with Apple innovations created the perfect storm for Mac sales.

Apparently, The VAR Guy’s readers were right. Fifty percent unit growth further solidifies the Mac as a mainstream — rather than niche — option for businesses.

Now, here’s a look at Apple traveling at Plaid speed…