If the weather is good, one can observe mount Fuji from the Shinkansen rapid train. Be sure to sit on the right if travelling towards Kyoto or to the left while travelling towards Tokyo. The station shin fuji propably offers one of the best views. I was offered a window seat by Japanese Salaryman who probably saw it so many times already. The picture taken represents reasonably what you can expect to see, the exact location it was taken is not certain though.