The performance specs that Tesla announced for its electric semi truck last month were unbelievable for some.

But now a transporter that participated in the Tesla Semi test program confirmed that those specs are actually real – or at least most of them.

There was a lot of speculation and skepticism leading up the Tesla Semi unveiling.

A good example is a Ryder executive who told Reuters that the vehicle will have a range of 200 to 300 miles and that they weren’t impressed.

After the unveiling and Tesla’s claim that the electric semi truck will have a range of up to 500 miles, Ryder ended up placing an order with the company.

Now there are not many people out there unimpressed by the specs announced by Tesla, but there’s still some skepticism about the company achieving those specs.

We mostly had to take Tesla to its word until now.

In his latest note to clients, Morgan Stanley’s Adam Jonas says that he spoke with XPO Logistics, a company that helped Tesla test its prototypes: