Yeah, I've thought about selling my VX for a more family-friendly 4 door vehicle, but there are quite a few work arounds. Like Joe said, loading from the rear door works well for the first little one. For the second, seat extenders for the passenger side should help - I'm going to be needing to purchase a set here real soon as my next one is due in June. Anything beyond two and your asking for trouble, in more ways that one! 
I saw one of those stretch-bug limos on the highway last night... Cooool! If you can pull it off, that would be awesome. But that is definitely a job *I* would leave to the professionals.
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