Wow, shocking, and a the loss of a lovely Range Rover - an LPG one too!
Did you have any trouble with the gas tank exploding when it burned? I have an LPG XM and often wondered what would happen regarding the gas, god forbid should the car catch fire.
The burn marks will be there for some time to come, there's a dual carriageway near home nicknamed Joyriders alley, it's littered with dozens of potholes and melted tarmac caused by burning cars, they've given up resurfacing it as it just gets instantly destroyed, and unfortunately, the melted, scorched tarmac lasts years.
You've made your mark on that section of the M6 anyway!
Must be the spot for bad luck, the 5th gear on my S1 failed about 10 miles past Lancaster a few years ago
Just glad you're now back on track with a new 'Rover and the Activa is looking and running great
Ciarán