Winter - the whole island is under snow until the end of February: ground, trees, roofs, guardrails and rocks
Snowfall - snow instead of rain all winter, the flakes lit up by your headlights
Winter roads - slush and packed snow along the edges, dark wet wheel tracks down the middle, plough banks along the verges
Winter sun - the sun sits lower, mornings come later and evenings earlier
Bare trees - the oaks drop their leaves for the winter
Snow banks - drive into a plough bank and it bursts into snow; the gap you made stays
Ruts - your tyres press tracks into the snow
Snow spray - on snow your tyres throw up snow and powder, not smoke
Snow on cars - snow builds up on your car and wheels, tears off the roof when you launch and shakes off on a jump
Parked cars - cars at the parking areas stand under snow, the bonnet melted clear by a warm engine
Winter jobs - a fifth daily all winter and a winter weekly: break through snow banks, drive on snow, top speed on snow
Tyres on snow - their own rolling and skid sounds
Tyre smoke - smoke and snow dust are now drawn on the GPU: a burnout no longer costs frame rate