Converse old chap, do you work for Lexus R&D? If not, please reassure us that you're not one of those pointless "transport consultants" paid for from our taxes, with a job description that involves making car ownership more difficult and/or expensive...? Time to come clean, old bean.
For my part, I've now bought the RX400h that I mentioned before Xmas. Whilst I miss my RX300 (I'm too chicken to start jamming 8x4 sheets of ply into the back of the pristine 400, the way I used to...) I must admit that it's an impressive vehicle. The hybrid/petrol changeover is smooth, it's powerful, luxurious, plenty of toys. I'm looking forward to 3 years of ownership.
Lows: reading that TFL are not accepting the V5C as "proof of conformity" despite it saying that it's a hybrid engine, and it being listed on the Powershift scheme & website." Bast*rd useless thieving bureaucrats. My application is in, and I'm waiting for a response.
Highs: 1. Looking forward to 12 months congestion tax exemption. 2. Being given a free 12 month parking permit by Westminster Council, and 4 months' rebate on my old one. Pleasant, useful, helpful bureaucrats. Well done.
Jury's Out: Fuel consumption - I'm currently getting 26 mpg, despite careful driving in urban/ extra-urban. Not yet impressed.
And to answer your question, yes we should certainly trial/embrace new technologies that allow us to retain the personal freedom of the car, whilst impacting less on the planet, and not curtailing our basic freedom to drive and choose the cars we would like to own. It's a definite step in the right direction. But I can see that it will face strong competition from Honda's idea to use hydrogen fuel cells with "home generators". They have some clever ideas over there on Yakushima island.