It’s coming up for holiday time but if there’s one thing that can spoil a long journey for all concerned, it’s car sickness. No one’s quite sure why some people feel it and others don’t. But that won’t be much consolation to whoever the victim is; whoever has to keep pulling over for the sufferer to redecorate the roadside; or other passengers who have their holiday delayed. Here we look at what car sickness is and what you can do about it.