A study conducted by researchers in Japan found that the sound of an engine can have a significant impact on the level of sexual arousal experienced during car rides. The study involved participants who were asked to listen to different sounds while being driven around in cars, including the sound of an engine idling, the sound of an accelerating engine, and the sound of a revving engine. Results showed that the sound of an idling engine produced the lowest levels of sexual arousal, followed by the sound of an accelerating engine, and finally the sound of a revving engine producing the highest levels of sexual arousal. This suggests that there may be some correlation between the sound of an engine and sexual excitement.

Another study conducted in Germany found that the vibration of a car's suspension system can also play a role in sexual arousal. Participants were seated in cars with varying degrees of suspension stiffness and asked to rate their level of sexual arousal. Those seated in cars with softer suspension systems reported higher levels of sexual arousal than those seated in stiffer cars. The researchers hypothesize that the vibrations from a soft suspension system may stimulate certain nerve endings in the body, leading to increased feelings of pleasure and excitement.

The responsiveness of a car's acceleration and handling can also play a role in sexual arousal. A car that is quick to respond to the driver's inputs, such as with a sharp turn or a sudden burst of speed, can create a sense of exhilaration and excitement. This sensation has been compared to the feeling of anticipation before an orgasm, where the build-up of tension leads to a release of energy. Some drivers even report having sex in their cars due to this heightened state of excitement.

Some people may find themselves attracted to specific types of cars, which can lead to fetishization.

Sports cars are often associated with masculinity and power, while luxury sedans are associated with wealth and status. These associations can play into our sexual fantasies, and may even influence our choices when purchasing a car.

These associations can be complex and multifaceted, and may not always align with personal preferences.

It appears that there are many factors that contribute to sexual arousal during car rides, including engine sound, vibration, responsiveness, and associations with gender roles and social status. While some of these factors may seem unrelated to traditional ideas of sexual attraction, they can still have a significant impact on our overall experience.