There are differnt factors. I haven't got zapped my my truck getting in and out of it yet, but generally...
1. don't slide out of the seat, more of a "jump" or pull myself out.
2. am normally wearing work clothes and don't wear a jacket when driving, at most a hooded sweater
3. I DO have cloth seat covers over my seats
4.(may be a factor ) I DO have rubber floor mats (no floor static maby)
5. Taste the Rainbow (yes I'm currently eating wild berry Skittles)
theres proably more factors but I am suprised I know what I do know...