Unless it did more than 100,000 miles in the last year, no, because that is the only service that isn't a Lexus service, and that is by the dealer I bought it from. The one owner took it to them for a service a year before he sold it after he moved up from Birmingham because there isn't a Lexus franchise in Warrington.
As soon as the shudder stops it it will pull strongly in 6th from 35-40 right up and beyond the motorway limit, but when shuddering it will only just gather speed in 5th, hard to call it accelerating and certainly not enough to consider an overtake.