I didn't read car magazines for a long time. I picked up an issue of Sports Car International to read on a flight somewhere. Thereafter, it became my reading material of choice for plane rides. I even picked it up a few times when I wasn't taking a trip, since I had come to like it a lot.
I came across another car magazine, a free ad supported online one that is very much like a print magazine. In exchange for your email address, you get an account which enables you to download issues in PDF format, or using their proprietary reader. Since it's a PDF, the layout is fixed very much like a print magazine, but unlike a normal print magazine, the layout is done in landscape, which makes it idea for reading on wide screen laptops.
Ads are embedded in the same way as they are in print magazines, but they take advantage of being a digital document by linking to movies and other content elsewhere. Their movies are obviously not their focus, but the photography and writing is quite good.
If you like cars and want something else to read, check it out: Winding Road.
The RSS feed is also good, if you like spy shots and up to the minute live-blogging autoshow coverage.