Who dies in car with Lenny on Law and Order?

In the "Law & Order" episode titled "Caviar Emptor," Lenny Briscoe is in a car with a character named Howard. During the episode, Howard is killed in the vehicle, which serves as a pivotal moment in the storyline, leading to further investigation into his death and the surrounding circumstances. This event highlights the complexities of the case that Briscoe and his partner must unravel.