An experiment with 160 college student participants suggested that driving through forested scenery may help reduce stress from previous stressors and reduce stress response to subsequent stressors.
Parsons, Russ, Louis G. Tassinary, Roger S. Ulrich, Michelle R. Hebl, and Michele Grossman-Alexander. (1998). The view from the road: Implications for stress recovery and immunization. Journal of Environmental Psychology 18(2), 113–140.