Getting to the trailhead would be difficult/impossible for an average 2wd car. The climb just before the parking area is steep with a rough gravel road. Your average truck, Jeep, SUV should be fine but a Civic, Altima, Focus... will have trouble.
Most of it is fast flowy with berms. Some sections have large smooth rocks to maneuver but nothing difficult. There is a small area of pump track and jumps at the trailhead to warm up on. The far end of Green Eagle is where the other trails connect.
Great fun for someone from Texas.