I think it's probably wise to stay within a reasonable walking distance of a train (or tram) station. Not just for commuting but for 'future proofing'. One doesn't know just yet how the oil price/car thing will play out.
Being a car journey away from train stations and also other public amenties such as supermarkets, healthcare etc etc might not look such a good bet in a few years. Of course we may transition to electric or hydrogen or other vehicles without skipping a beat in which case it won't matter, but buying any time in the foreseable that would be high on my list of priorities just in case.
This 'risk' is very noticeable (to me) when I visit friends who don't have these facilities on their door step. It doesn't seem to occur to them that they may not always have or be able to afford to run a car as cheaply as now when it takes them 20 minutes to reach a supermarket or 10 minutes drive to the nearest train station. I wonder how they would cope if circumstances changed and who might buy their (expensive) houses off them.
Ah you're talking after that horse has bolted here! I live in a rural area east of Knutsford, utterly reliant on cars. Sold in Manchester a year ago and renting now. We don't stretch ourselves so it would take petrol prices to treble or more to really hurt. Knutsford is ok but that's a poor train line and you have the plane noise.
I know the areas South of Timp, East to Disley, West to Lymm, South to Holmes Chapel all pretty well - know the areas we'd like but are constrained/reluctant to buy due to lack of supply/choice and anticipated price drops.