<human>: This is a hard topic for me to bring up to my brother. My older brother (age 29) and I (age 17)  have been close for many years. He has been very successful in his business career and I have helped him whenever I could. He is a franchisee and owns many stores. About 3 years ago... my freshman year in high school he told me he would let me borrow a lamborghini if he got one for prom. About 4 months ago he bought a lamborghini gallardo. I asked the girl I pictured taking to prom in it since freshman year to go with me. She said yes. I want to make the night perfect and that would make it perfect. How do I bring up that conversation with him? Its his car, and I know he told me he would. But I dont want him to feel like Im trying to use him. I havent been too close with him lately. We are starting to grow apart and we really dont talk often anymore. How do I ask?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: How do I ask my brother to borrow his lambo for prom without it seeming like im trying to use him?