I would also put a second protective bag over the cushioned pool noodle toilet seat to catch splatters (yuck.) An easy, DIY, camping / emergency preparedness toilet that's also good for those long-distance vacation road trips!
Full Tour of my 4×4 Mercedes Sprinter Van Conversion
Road trip are much pleasant if you use an empty baby wipes box to put in a toilet tissue roll. You’ll prevent a mess inside your car avoiding the roll gets unrolled This will be a great idea for bio liners.
For camping or an emergency "Johnny on the Spot" when ya just gotta go . use a plastic bucket and place a pool noodle on top for comfort. You could put a plastic bag in the bucket then at the pool noodle, easy clean up
you take a bucket, a section of pool noodle, a trash bag DIY Homemade Porta Potty. make your own potty bucket liner with trashbag, slip the slit pool noodle over the edge for a toilet seat and attach a roll of TP to the metal handle.