Originally Posted by railroadtycoon

I'm not too sure about car and private limousine service, but as mentioned, by train, you can go to Chiba (by hourly department JR Rapid trains|some morning Narita Express's also stop at Chiba depending on your arrival time), then at Chiba change to a local line to Mobara, 1280 yen one way in about 2 hours. Strait forward, no driving, no gas, no parking.