The issue with entering and exiting vehicles has been a long running problem, but I'm happy to announce that is now (hopefully) fixed!
No more problems should occur when the hover car is blown up while you are inside. As for the issue with Blueprint Sandboxes, I changed how the permissions were reset so that it no longer is a conflict with the mod.
If any issues with being locked out of vehicles occur, it can be reversed by typing '/permissions' and removing the player from the 'driving-lock' group. I hope this is no longer a necessity from here on out.
Please update to mod version 0.2.17 and let me know if you find any more issues. I appreciate your feedback!