The screenshots below show Sunlight and grass reflection when the reflection surface is inside a vehicle
http://cloud-2.steampowered.com/ugc/919020759485505538/50CEC29673F25784BF3285E20AFBB43CDBAE08F8/
http://cloud.steampowered.com/ugc/919020759485394137/8AA39BBB97C779525720935C962741526E04E7FE/