This is the end of the road, or is it. Your 2WD town car will be able to make it here. The road beyond is recommended for 4WD and would need a decent clearance to cross some of the streams along the way - I had no issues in my 4WD cachemobile - so your call on whether you are prepared to venture further on. Although this cache is along a public road, there may be restrictions on it for forestry operations from time to time. So please check the DOC website and the info board at the start of the North Bank Road before coming this far.
The cache is a 400ml Sistema container with log, pencil and room for small swaps.
Enjoy.