Quite easily actually. That's an average of only 391 km per day, which many vehicles out there easily exceed. The Falcon panel vans that used to do the daily paper runs from Kalgoorlie to Leinster and all towns in between knocked up a million k's in not much over two years - mostly running on gas.
Spot on.
I had a Toyota Hi-Ace with the 2.4 naturally aspirated diesel that had over a million k's on the original engine (third gearbox) when I sold it. I put the last 750,000 k's on it in about 3 years.
It was a pilot vehicle and did a lot of k's almost every day. Was nothing out of the ordinary to do 1,000 k's in a single day.
Must admit, the old girl looked nowhere near as tidy as that Disco at the end of it all though. :p

