In various media, we have seen Superman occasionally use a mechanical form of transport, more for its anti-Kryptonite protective properties than for travel. Most instances of this have been pre-Crisis however. Most notable would be the late 70s to 80s "Super Powers team" cartoon era. The only other detailed reference to a multi-use vehicle would be in the animated series, where Clark was able to repurpose the ship that brought him from Krypton into a functional transport.
I was wondering if there are any instances in the Post-Crisis comics where he has some special signature vehicle he uses and what it or they may look like?