After celebrating New Year's Eve with friends, he was supposed to be headed home.
"He went home - he was supposed to be safe," said his good friend, 15-year-old Daniel Moore, as he wept on his mother's shoulder. "I don't know what happened."
At 2:13 a.m. Friday Savannah-Chatham police and Southside Fire/EMS were called to the bend of Wilmington Island Road on a report of a single-vehicle accident. When first responders arrived, they found that a vehicle had slammed into a cinderblock sign and tipped onto its side.
McAllaster was behind the wheel of the vehicle and was pronounced dead at the scene, said Gena Moore, spokeswoman for Savannah-Chatham police.
Moore would not say whether speed or alcohol were factors in the crash.
McAllaster was a freshman at Benedictine Military School.
There were no signs of skid marks leading to the decimated wall, only orange spray paint left by traffic investigators who worked well into the night with the help of a large stadium lamp.
Moore, who also lives in the neighborhood, said the curve where his friend died is known for wrecks, even during the daytime.