They left out the simplest solution. Lose the mid section, and you can draw seated, might have to lean forward a little.
Losing those extra pounds would be good for just about everything
, but it's from from true that one has to have washboard abs in order to be able to sit in a vehicle and/or drive comfortably with a pistol -even a full-size one, even with a full-sized WML like the Surefire X300U, attached- holstered at the waist.
I know and have driven long-distances with plenty of bigger folks who tote a "Roland Special," IWB/AIWB. Similarly, I've seen more than a few who utilize such setups to excellent effect -not lagging behind their slimmer counterparts, at all- in vehicle-tactics classes.
Overall, those factors which affect "comfort" (which is itself a subjective assessment that is unique to that end-user and that end-user only) in any other aspect of concealed-carry will also apply to being behind the wheel or simply as a seated passenger: the specifics of the gear, gear setup, as well as support-gear/setup will interplay with "comfort" to drastically effect the outcome for any one unique person.
One item that I would like to stress, however, are some of the more pervasive misconceptions regarding the holster/seat-belt interaction, which I feel this video by PHLster address well:
Before I was married, I used to do track days and autoX at least once a month. I don't think those skills really translate to defensive driving when running for your life. Those skills are mostly based upon finding the best line beforehand, executing it, and refining it based on attempts.
I absolutely agree that the defensive-driving mindset and certain portions of the skillset do not overlap well with motorsport driving. However, basic vehicle-control skills learned from autocross and other motorsport driving definitely do translate to the pure-driving portion of the equation.
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I like to temporarily put my sidearm in the center console under my elbow when driving, then re-holster it before I leave the vehicle.
^ Emphasis added.
I really want to highlight the
extreme importance of what
@KillerFord1977 wrote - that discipline of re-arming prior to exiting the vehicle, should one decide to disarm, for any reason, while inside the vehicle.
Shortly after I started on the path, there was a post on the Ohioans For Concealed Carry discussion Forums by member
adf8585 which detailed his incident at a NE-Ohio gas-station -
Note that his quick trip into the convenience-store turned out to be a fight for his life. As he wrote in that thread, he was lucky to have been able to hold himself "in the car with [his] left hand as they were trying to pull [him] out of the car," while retrieving his weapon from the center console with his other hand, and shooting one of the assailants.