A Silky Cache!
There are two Park and Ride facilities in Taunton. Silk Mills Park and Ride site is based on Silk Mills Road on the west side of Taunton. Taunton Gateway Park and Ride site is situated near Junction 25 of the M5 to the east of Taunton. Silk Mills is where I park if I'm using Taunton town centre for shopping trips - a lot less hassle than driving into the centre!
Conveniently, the P&R car park also gives access to a wide range of fields for walking the dog.
I often park up and walk Kanga here before work and at lunchtimes.
You are looking for a small, flat cache.