I'm new to this forum but have been a member of the main group for a year. Hoping to pick a brain or two

Bought a Bongo from Japan in November '07 and didn't use her much until recently when she has been (was

) driven on a daily basis by my husband

Last week while on the motorway near home there was a serious 'bang' and clouds of smoke/steam and water and she came to a stop on the hard shoulder. Engine was still running I am reliably informed

- just no transmission

(she's an automatic) She was recovered to the local garage where she still sits 'because they're awfy busy'!! I have a feeling that the infants there wouldn't know what to do unless they can plug a computer in!
Question ....... has anyone experienced something like this (I hope not) or do you have some idea of what might be the problem?
Any replies gratefully received and acknowledged - as I love my Bongo to bits and would dearly like to get her on the road again! Technical

info ...... diesel, automatic, '95, 120,000 k on the clock