What you plan on doing sounds fine but you do not need to put in one of his hides. Just wadding up some paper towels (or newspaper) would be fine. Other than the hide, itself, not being necessary (since the wadded papers could take its place)...& I may be overly cautious ... I'd worry about the hide sliding around.
Make sure that you do not place his transport container where he will be in direct sunlight (which could overheat him) &/or directly on top of where floor may become very hot.
This is what I do to transport my snake/s (on a trip &/or for a vet visit):
Winter time:
Snake placed inside one of those "kritter keepers" (I have "several" of different sizes) which is lined with paper towel and has wadded up paper towel sheets, placed inside, as well. The "kritter keeper" is placed inside a cooler or an insulated box (with wadded newspaper inside, on bottom & sides, to wedge the "kritter keeper" to prevent its movement). A heat pack is placed inside the cooler/box, wrapped in a sheet of newspaper, and somewhere off to the side of the "kritter keeper".
Summer time:
Same as above but minus the heat pack - and insulation, of box (if a box, rather than a cooler, is used), is not of utmost priority/necessity. If extremely hot out, I may place a cool/ice pack in the manner described for the heat pack but it is, usually, not necessary since we have the modern invention of ACs.
BTW My vehicle AC (if AC is used) is usually set at a lower/comfortable cool setting, when transporting snake/s, rather than fully cold.
Winter or summer:
- I make sure that the containers/cooler/box will not be in a position (in the vehicle) to be pounded by direct sunlight or otherwise overheated.
- I do not transport if the snake has just been fed.
- I do not worry about moisture/water during short trips nor on trips that are less than 24 hrs. long.
- If a cooler is used (especially on a long trip) I will/would ("once or twice") do a quick lifting of the lid for air exchange.
A couple of times in the winter, when bringing a snake home (that I picked up), I have had it/them under my coat (between coat & my body) for a 2-3 hr. trip ... at the least end until vehicle was, sufficiently, warmed up ... in a simple no frills (i.e no heat pack, no insulation, no hides and with just a sprinkling of substrate <or not>) container. Once, not in a container but under my coat (I was not the driver).
In the summertime weather, I have brought home a snake in a simple container (again, no frills) on a 2-3 trip.
They did just fine.
