Originally Posted by
RichardInSF
And if it was me, I wouldn't skip Meiji shrine. Cars can get in there somehow since the temple offers a service of blessing them. I think the car entrance is on the side not far from Yoyogi station, but it is harder to find. Also, you may need to have a good story (in Japanese) to get through.
According to
this website (in Japanese - sorry I haven't checked if there's an English version) cars can enter Meiji Shrine. Entrances are near Harajuku Station and Yoyogi Station, and marked with blue arrows on this map.
http://www.meijijingu.or.jp/img/access/naien.pdf
I've also found
this Q&A in which a Tokyo taxi driver confirms that if you tell a guard at the gate where you want to go there shouldn't be any problem. However, you may have to call a taxi on the way back or ask (and pay) the driver to wait for you as it will not be possible to find a taxi once inside.