So where do you have it?
1. Laying on passenger seat *(a,b,c,d,e,g)
2. Wedged next to the seat *(b,c,d,e,g)
3. Gun magnet *(b,c,d,e,f,g)
4. Holster mounted to the vehicle *(d,e,f,g)
5. Center console *(d,e,g)
6. Other
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*
a - able to shift during normal driving
b - may end up in an unknown location in the event of a wreck
c - may end up as a projectile in the event of a wreck
d - may need to move eyes off threat to grab it
e - will be visible if you must exit the vehicle in a rush
f - visible notice to people looking in the vehicle there may be something of value inside
g - must expose weapon to exit with weapon concealed
I believe a few years ago that he mentioned he keeps it in his cup-holder and is aware of the potential consequences (a, b, c, e, f, g) of said choice.
That being said - anyone not carrying appendix (or maybe OWB if that's your thing) doesn't have reliable safe/quick access to their firearm. #ChangeMyMind