Either you have too many enemies or live/work in a country where your life could be in danger, an armoured vehicle is clearly something you should consider assuming you have the money for it. Plus few bodyguards as well.
Last week Mercedes-Benz S-Class Guard entered production, alongside the armoured E-Class (W212), M-Class (W166), G-Class (W463) and S-Class Pullman (VF 221).
Manually built in Sindelfingen near Stuttgart, Germany, the armoured S-Class Guard offers up to VR9 levels (both in transparent and non-transparent areas) of protection against military weapons that according to Mercedes can travel twice as fast as bullets fired from a revolver. The S-Class Guard can also withstand shrapnel coming from hand grenades.
Overall weight is not known, though with the top protection it will be much heavier than the model it is based on, as just the windshield weighs 135kg and is 10cm thick. The cabin is largely wrapped around in 5cm thick steel plates to offer the best protection.
There are many options available, but in general the S-Class Guard is around £160,000 more expensive than the standard S 600, which in UK is priced from £139,985.00 for the S 600 L, so if this is the car you need, you are looking at spending at least £300,000.