Ray J is cruising down the Hollywood Freeway in his black Lamborghini when fans in a passing car recognize him. The singer/actor/sex-tape star slows down so they can snap a photo. The fans giddily check their digital camera as the $200,000 sports car speeds away. Ray J, born Willie Ray Norwood Jr., started acting at age 8 and released his first album in 1997. But Brandy’s little brother became freeway-photo material just last year, when his homemade sex tape with Kim Kardashian hit the Internet and he was linked with a freshly divorced Whitney Houston, Lil’ Kim and tell-all seductress Karrine “Superhead” Steffans. Now the 27 year old hopes…