The feelings towards the top men at Volkswagen over the last few weeks have been varied, but they have been a mixture of incredulity, resentment and disappointment.

A lack of openness from the company as a whole, and a lack of urgency when it came to reassuring customers about whether their car was involved or not, means that this is not a big surprise.

However, it was hard to not feel a flicker of sympathy for Michael Horn when he faced the music in America today. As the boss of VW in America, Horn was the first senior employee to have to stand up and admit that the company had done wrong, and now he was having to answer questions from a US Congressional committee.

If you missed it, it started with a summary of the situation from a few members of the committee, before Horn issued an apology, when he stated that the investigation was ongoing. Each member of the committee then had five minutes to pose questions.

The committee was (as many of us will be) incredulous that Horn did not know about the defeat devices before 3 September, and he faced this question several times over. He admitted he knew of emissions irregularities, but not about the device itself.