H and h

Saw a paper-plated Lexus HS-250h yesterday.  Based on the JDM Avensis platform like the Scion tC, this entry-luxury sedan is slightly larger than a Toyota Corolla, beating out the next nearest luxury competitor, the Civic-based Canadian-market-only Acura CSX.  I don’t have any gripes with the design (it looks great for a sedan), or the technology (Toyota Hybrid Synergy Drive is the benchmark), or the market segment (this has been empty since the Infinity G20 disappeared): It’s the labeling.  The HS is a hybrid-only vehicle, hence the “H”.  Does it really need the “h” after the 250 to drum it into out heads that it  is a hybrid?  If they intended to keep the little h to make it fall in line with all the other hybrid models nomenclature wise, they should have chosen a different series name.