My Tomica World - Introductions

Are there any dates or other info anywhere on the 300 Series so we could get an idea what time it was from?

This? New in 1994 catalogue, this pic from 1995 catalogue. 未来特急のぞみ号コントロールセンタ. Future Limited Express Nozomi Control Center.
 

For the Plarail Pico device, google this: プラレール・ピコ

Plarail made a similar version a few years later but it's the JR 500 class Shinkansen