We asked this question way back in February 2012! So glad there have been so many replies. We picked up our 2100 in June that year and have loved every minute having it. Our Chihuahuas, Pepper and Ginger, also love it. We have two small dog beds which stay up between the driver and passenger seat and while on the road they mostly sleep in those, sometimes each to a bed and sometimes together. (They sleep with us at night like they do at home!

) Pepper always wants to ride in the passenger's lap and occasionally we give in.
Since picking the 2100 up in 2012 and driving it around Michigan and back home, we've been on several trips around Texas. Last year we spent about a month in New Mexico and Colorado and this last September and October we spent a couple of weeks in New Mexico – from Eagle Nest to Cloudcroft. The leaves were beautiful! We finally have a toad, a Chevy Spark, and love that we can leave the dogs in the Cruiser while we go on side trips during the day.
Anyway, our pups are great travelers and like many of you have said as soon as we get the harnesses and leashes out they're ready to go!