Hundreds, including humour columnist Neil Humphreys (fourth from left) and NTUC Club chief executive officer Yeo Khee Leng (right in black) gathered at the starting line at the F1 Pit Building yesterday morning for a different kind of race - instead of burning rubber, some 400 cyclists, kick-scooter users and inline skaters took part in a 4km ride to showcase green transport options. The Fun on Wheels category was introduced at this year's NTUC Income Run 350, which drew 10,000 participants across four categories, including a 21.1km half marathon, 10km race and 800m Kids Dash. The annual event organised by Young NTUC bills itself as an eco-run. Walking the talk, organisers went green with efforts such as paperless registration and trash sorting. To encourage households to save electricity, 1,050 participants were awarded NTUC FairPrice cash vouchers when they presented utility bills that reflected usage below the national average for their household type during race-pack collection. Said Mr Desmond Choo, executive secretary of Young NTUC and MP for Tampines GRC: "The enthusiasm of our volunteers and Run 350 participants reflects Singaporeans' growing dedication to protecting our environment."