CHICOPEE — A Lyft driver described a harrowing experience to Chicopee Police: In June, a gaggle of people allegedly surrounded and assaulted the man and then stole his car, court documents say. Police filings paint a 20-year-old Springfield woman, Shanta Pressley, as the ringleader of the incident. She faces three felonies: carjacking, larceny over $1,200 and conspiracy, Chicopee District Court filings show.