Carthedral is a 1971 Cadillac hearse modified with 1959 Cadillac tailfins. Welded on top is a VW beetle and metal armatures with fiber glass. Carthedral is a rolling Gothic Cathedral complete with flying buttresses, stained glass pointed windows, and gargoyles. Carthedral was designed and built by Rebecca Caldwell.
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.