Three young adults, all graduates from Lagunitas School District, were killed in a solo crash early Tuesday morning when their car went off the road and struck a utility pole and two trees, splitting the car in half. 

Chance Maurer, 18, of Novato; Lancelot Argall, 18, of San Anselmo; and Chancellor Argall, 20, of Woodacre were determined dead at the scene. 

Mr. Maurer was driving, and all three passengers were wearing seatbelts. At 12:09 a.m.,…