hmm sounds like your life is one tracked focused on cars. is that what your life consists only of.
if all you worry about is material things then something is wrong.
id never boar anyone with a conversation they are not interested.
the key to a good relationship wether a friend or lover is to conversate in things both you are interested.
another thing is to consider dont just boar them talking about you, that boars them as well wether its your car, your muscles, your money, your coolness etc.
focus on the things that matter.
i tell you some men are so ignorant when it comes to woman. maybe thats why some many guys like mindless woman.
talk with them not to them, be slow to speek eager to listen. Most woman love to talk about goals and future plans in life. if your only living or thinking about for today, you will always have problems