A few months ago I saw a picture of a child in a carseat in the back of an RV 6 or 7. How many of you have done this, and how long is it practical? We just had our first little one, and wonder how long we may be able to ride 3up. I'd love to see some pics. The wife finishes Vet school in 3 months, and hope to start a -7 right after that.