A new truck built for Walmart Canada by a Canadian firm can carry 40 percent more cargo than a standard 53-foot tractor trailer. Innovative Trailer Design Industries (ITD) of Mississauga, Ontario, has built four of the 60-foot trailers for Walmart and two trailers that are being operated under a 12-month pilot program for Ontario's Ministry of Transportation, according to an article in MM&D magazine posted on ITD's Website . In addition to the longer trailer,...