At the moment we have a 180,000 mile diesel Volkswagen Golf for the short runs we do and a 60,000 mile diesel Honda Civic Tourer for the long runs and caravan trips. Every year, we do four caravan (1300kg) holidays of about 1200 miles each.We are likely to swap to a 1600kg caravan and sell both existing cars. I favour one small electric car for the local runs plus a big diesel for the towing and longer runs. Or is there a plug in diesel hybrid that would cover all our needs and would allow us to own just one car?