So, if I am to travel 1000 miles on a single tank of diesel in my Seat Leon Ecomotive, here’s just a taste of what I should do: tape up the shut gaps (only if I’m desperate on the way back), empty the glovebox (done), have a haircut (thanks for the reminder), drive at off-peak times (how busy can the M25 be at 8am?), keep revs below 1700rpm (noted) and wear shorts (have you seen the weather forecast?!).

That’s just the start. I also have to: avoid hills and cold weather (I forgot to mention I’m driving to Scotland…), not always use top gear (fifth gear?), burn a fire beneath the engine before starting to warm it up (just no), don’t use the radio (let’s hope I get on with photographer Malcolm), drive at 56mph (this is quite likely), pump up the tyres (done), limit braking and acceleration (good advice) and remove everything that isn’t bolted on (I lost the parcel shelf six months ago…).

And if all this fails, I’m to change my sleep patterns (I’m writing this blog at 11pm before a 6am start), warm the engine before brimming (good tip), fill up at the coldest time of day (frost forecast tomorrow), and use a premium diesel (also a good tip).

And that’s just a taster of what you told me; thanks for such a great response yesterday. The route? Well, in the interests of spontaneity, I plan to leave Autocar’s Teddington car park at 7am tomorrow, head to the nearest filling station and then drive exactly 500 miles north. By my calculations, there’s a nice little car park just north of Dundee that I’ll be turning around in tomorrow evening.

Then, back to Teddington. All being well, I’ll be back Wednesday afternoon after stopping Tuesday night around Carlisle on the way back down. With a few nervy moments on the down, coupled with the image of a slowing moving fuel gauge drifting anticlockwise.

I’ll be updating on to let you know how I get on, or you can follow me - @mtisshaw - on Twitter for progress. Sweepstake on how far I go? I’ll go first: I reckon I’ll make the 1000… just.