Perhaps it was appropriate that Barcelona, home to the surrealist Gaudi, produced the most surreal Grand Prix of recent times. No-one had predicted victory for the Williams team and Pastor Maldonado, still less the happenings of an hour later.
First though, the action on the track and it says something for the 2012 championship that at what is normally the most predictable Grand Prix of the season, none of the expected front-runners ever looked like winning.
It could so easily have been McLaren's weekend, as Lewis Hamilton dominated qualifying with blistering pace, only to have his times disallowed after a mess-up by the McLaren team. The rules regarding returning to the pits with enough fuel to deliver a sample are clear, as is the penalty for Hamilton not having enough fuel.
The team's vain attempt to stop Hamilton on the track and avoid sanction by claiming "force majeure" was clearly an act of desperation, which the stewards saw right through, as they demoted him to last place on the starting grid. It was tough on Lewis, who driven flawlessly, but McLaren thoroughly deserved the punishment for their incompetence.
The painful truth is that McLaren is suffering far too many bungles for a top-level team. In recent races, Hamilton and Button have both suffered a series of flawed pit stops which lost them vital ground.
Even as Hamilton clawed his way up the field from 24th on the grid, there was a scare as his car ran over an errant rear tyre as it left the pit lane.
This time there was no damage, only a short delay, but it certainly isn't the seamless performance we have come to expect of the team.
Ironically, the man who no doubt is facing the majority of the McLaren pressure, Sporting Director Sam Michael, saw his old team complete an almost flawless weekend on the racetrack. Williams took over Hamilton's pole position, then Pastor Maldonado converted it into their first victory since Juan Pablo Montoya won in Brazil 2004.
Seemingly from nowhere, the Williams car produced a pace which saw Maldonado comfortably control Alonso's Ferrari challenge. He became the first-ever Venezuelan to win a Grand Prix in fine style, achieving the 'holy trinity' of pole position, fastest race lap and victory. However the celebrations were to prove short-lived.
A little over an hour after the race, just after the team members had posed for a celebratory photograph, there was an explosion at the back of the pit garage. Flames and dense smoke billowed into the forward area as mechanics from Caterham and Force India joined the Williams team to get the blaze under control.
A pit garage is divided into several different areas by partitions which the team erect when they arrive at the race. What we generally get to see on TV is the forward area, where we see the cars, drivers and race mechanics.
Behind the screens is the area where chassis engineers and engine technicians monitor the cars' performance on banks of computer screens. In another area, the fuel and oil specialists test and prepare the vital supplies.
It appears that team members may have been transferring fuel which had been in Bruno Senna's car, ready for transportation, when a spark ignited fumes.
Whatever happened, something went terribly wrong.
Thankfully none of those later treated for burns and the effects of smoke inhalation have been seriously hurt, but there were many heroic acts in the intervening minutes. Not least from Pastor Maldonado.
He emerged from the smoke carrying his 12 year-old cousin, Manuel, who had a broken leg set in a cast. The family had been celebrating in the garage when the blaze broke out and the sight of the race winner carrying his young cousin on his shoulders was for me the defining vision of an unforgettable weekend.