Any time you are about to do something where you think you'll face triggers to smoke, try changing something up in how you go about doing that thing.
For example; while driving it's of course critical not to distract yourself from the task of driving but, you could change up other things such as; open up the windows so there's lots of fresh air flow. Listen to a different radio station maybe. Change up your seating position slightly, just do smalle things differently than what you normally do. Small changes cause your brain to focus differently which can prevent an idle brain from going to thoughts of smoking.
On the topic of your car; take the first opportunity you can to give the inside of your vehicle a really good cleaning. Get some upolstry cleaner for the seats if they're cloth seats and something like Armor All for the plactic & vinyl surfaces inside your car. And; clean the inside of those windows with glass cleaner. You'll be unplesantly surprised at the yellow yuk that appears after spraying your windows with glass cleaner. Having a fresh, clean smelling vehicle to drive will help keep your mind off smoking while driving! Or; use the money you're saving to get your car professionally detailed. It's a bit pricey but well worth it and you'll only have to do it once.
Same thing applies to other situations where your brain might go directly to thoughts of smoking. Waking up in the morning is a big one for most new quitters. Change up your morning routine a bit. Even changing up the order in which you do things can help keep your mind focused on what you're doing instead of focusing on smoking.
Give it a try and see if that helps.