I dont have the ES, but I have had the RX 330 and GS 450 in the past. If I remember corrcetly, the ES was much larger than I thought it would be. The IS is pretty small, so that is the only model I would really worry about the carseat in. Have you looked at the RX at all? I have an SUV now and I doubt I will go back to a sedan while having small kids.
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I got an ES350 in June and I love it! The trunk is very big - fits everything we need it to fit - and the inside is large. The front seat can be all the way back with the carseat (we have the Snugride) behind it.
Re: Lexus ES350
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