It's very common for an engineering car to come in.

The maintenance of the track, the maintenance of some vehicles in trouble, the detection of safety test and so on all aspects, all need the engineering vehicle! uuuuuuuuuu

Even if the Big Four don't care about the drivers, they can't ignore the safety measures. It's an attitude question, and it's why it's attractive here.

Two identical tracks, everything else is the same.

One is indifferent to security, the other is to take care of everyone's security. So where do you choose to play? It seems that you can make a choice without saying much at all. The eyes of the...