Recently, I was watching in Discovery channel, the construction of the 'Bridge of Peace' that is being constructed between Alaska (USA) and the northeast tip of Siberia (Russia). When completed, that would be the longest bridge in the world. Of course, building that is pretty difficult, since it has to withstand extreme weather conditions- such as on ice for a good amount of time every year. It is expected to be ready in a few years. When ready, it is expected to bridge the two superpowers of the world.. (can it be still called so?)
That opens up the (theoretical) possibility of reaching US from India in a car.. just that one needs to get visas from China, Russia and Canada before reaching US.. Click on the map below to see the hypothetical pink roadmap from Karnataka to CA..