Canals... Aaaaahhhhh!

I was wondering if it were possible to re-introduce a canal system in britain. The positive side would be to put freight back on to the water ways. If new canals are built we may be able to utilise the potential flood areas in this country. In time it would pay for itself, we may be able to build super canals to accommodate britains freight, for example; one barge towing six containers or more. Surley this would be cheaper and cleaner, than driving six lorries to their destination, i know this would not work for fresh produce or perishables; you would need something a bit faster. But for general haulage this would be ideal. The super canal would be used for heavy freight south to the north, and back. Any where realy. The smaller canal systems would be rebuilt and modernised. Also natural habitats may stop being threatend by floods. And if managed properly man and nature will live side by side, in harmony of course. Haulage companies would need to swop lorries for barges. You would need a large central canal and the smaller canals would be joined on to this, so as to deliver in to the towns. Just think the ammount of lorries off the road. You could even hire a drive on barge, just think you could take your car, just drive on to the specialy adapted barge and go touring the water ways.
Aaaahhhh....just a pipe dream
free spirit