Painful is the word Jenson Button used to describe his Mexican GP as his McLaren-Honda just did not have the speed to challenge.
The Brit started Sunday's 71-lap race 20th on the grid after incurring a 70-place penalty for repeatedly changing his engine and its components.
That, though, was just the beginning of his misery.
Never mind moving forward, Button was unable to keep anyone behind him as his MP4-30 suffered a massive speed deficit around the high-speed circuit.
"Painful, I think, is the word," he said when asked to sum up his race.
"I was on the harder tyre at the start but still it was just waving goodbye to everyone in front really.
"The straightline speed that [other cars] have is just phenomenal.
"We're still doing 345 [km/h] on the straight but they're 20 km/h quicker than us so when they have DRS and they have full deployment they're pulling 45 km/h quicker than us.
"It's a massive difference in speed and I couldn't hold people behind me even if I was in front of them – not that I was very often, unless they were pitting or lapping me.
"We have a lot of work to do."
The Brit believes McLaren-Honda suffered more than others with the altitude with the Mexican GP being the highest on the F1 calendar.
"We've lost more power here than most with the altitude for some reason," he added.
"I don't know why; normally you'd think it would bring everyone closer together but it really hurt us here."