As has been reported, the Sai is Toyota's version of the Lexus HS 250h, and it's aimed at consumers shopping for a hybrid who would prefer something larger than a Prius. We see plenty of Prius styling cues in the front and rear fascias, although the car's general profile and stature differ little from the Lexus.
Also cloned from the Lexus are the mechanicals. The Sai uses the same 2.4-liter I-4, also mated to Toyota's Hybrid Synergy Drive system. When it comes to fuel economy, we imagine the Sai will mirror the HS, which is EPA rated at 35/34 mpg (city/highway).
Although the Sai goes on sale in Japan come December, Toyota has no plans on exporting the car to North America.