His day at the beach ended with him killing a manTeenager Thomas Gibson, inhaling nitrous oxide, fatally struck 79-year-old Edward Hickey with his car. Weeks after getting his license, Gibson lost control while driving under the influence of NOS, killing Hickey and injuring his nephew. Gibson, now 20, received a 4.5-year sentence and a 7-year driving ban. The tragedy highlights the dangers of nitrous oxide and driving.