A veteran MTA driver who was bitten by a passenger on a crowded M104 bus in Manhattan yesterday afternoon was rushed to St. Luke's Hospital for tests after the incident. According to an MTA spokesman, Shelia Bolar, 49, "had given 42-year-old driver Peter Williams a problem on the bus. He got up to tell the dispatcher and when he rose from his seat the woman bit him." After sinking her teeth into Williams's forearm, Bolar ran south on Broadway before being arrested near West 73rd Street; she's charged with second-degree assault. The attack is reminiscent of last December's fatal stabbing of bus driver Edwin Thomas, which has prompted the MTA to test out new driver partitions on buses. Speaking to the Daily News about yesterday's mouthful, Bolar's neice says, "She's a little... She likes attention. She's going to do whatever's gonna get her the most attention."