Use your mouth

You decide to show him that you can use your mouth efficiently as well. You start by planting soft kisses on the tip, making him twitch each time your lips make contact. After a few kisses all around the head, your tongue gets in on the act, shyly peeking from in between your lips to give quick teasing licks on the underside. Those teasing licks gradually evolve into long ones, starting from the base and going up along his length to end at the tip, before going back down again, drawing sighs of pleasure from the driver.

After a particularly long lick, you surprise him by taking the tip of his cock in your mouth, instead of going back down, massaging the head of his penis with your lips. Once the head is completely inside, you start to suck on it, using your tongue to trace shapes all over it. You grip the rest of his length with your hand and rub it while continuing to work your mouth on the tip.

You push a strand of hair behind your ear with your off-hand before taking more of his cock in your mouth, enjoying the gasp of pleasure you hear from him. Your lips move up and down his shaft, getting it all wet from your saliva, and giving you more lube to work your hand on the rest of it. At some point, you feel a hand in your hair, a soft touch on your head that helps you set the pace, sometimes slower, sometimes faster, but always rewarded with more sounds of pleasure from its owner.

Falling into a good rhythm, you wonder if this will be enough to make him cum.