Look at the volume of the car, it is tiny compared to rail. Faster isn't a big help since we already have efficient air for that. Heck, we still use barges fo

Look at the volume of the car, it is tiny compared to rail. Faster isn't a big help since we already have efficient air for that. Heck, we still use barges for cargo. Plus, the whole evacuated tube would play hell on cargo loading because of the added requirements. Speed buys very little given cargo is fine with traveling all night.