Started driving up to Cleveland last night (for a mate's wedding today) in my 98 Mondeo 2.5 Ghia X automatic.
On the A1, been in a bit of slow traffic, had just turned the cruise control back on to take me up to cruise speed and it tripped out at about 65 mph (should only do that below 25). Looked at speedo and it was reading 0. Glanced at computer and it was reading 0. Looked at rev counter and that's reading about 3.5k - higher than I expected. Clicked button to take off overdrive (4th to the rest of us) and the revs don't change - so it's not going into top.
Left A1 at next exit heading for any conurbation (Weatherby I think), as we reach the top of the slip road and slow down the gear change was unusually abrupt. When I got to the next roundabout it stalled and I freewheeled into a layby. The car restarted OK but no change on the speed front. Called for cavalry.
Mechanic has a look at the engine, gear box oil was below min. Checks all fuses under bonnet but all fine. Gets it loaded, looks underneath and he reckons that to get at any sensors would be impossible in that situation. We didn't want to miss the wedding so got towed to our destination. On the way he said his mate had a BMW that had a similar problem, would accelerate to 60 the speedo would read zero and it wouldn't engage top gear. That was solved by cleaning the gear box oil filter.
So any ideas on what the problem might be or where to start looking (other than for a new car). I am a knownowt of the 1st order.