Will be great for shipping potato chips and stuffed animals or for local shipping. On wiki it states that Tesla projected it would be building 100,000 semis annually by 2022 so I wouldnt expect their range estimates to be accurate either. We now know a F150 with 1800 pounds of batteries can only go 120 miles pulling a small 4000 pound camper. So a 27,000 pound Semi with 11,000 pound battery pack doesnt stand a chance going much over 150 miles pulling a 40,000 pound trailer, that is 67,000 pounds needing to be moved vs 11,000 pounds for a F150 and a small camper.
That article covers delivering potato chips which weigh 13oz for a large bag, replace cases of potato chips with cases of pepsi and the weight increases well over 10 fold. It will be interesting when smaller independent trucking companies load it with 40,000 pound trailers and start reporting actual range figures and labor cost increases for charging wait times.