Its legal to do it and I'd do it. I'd use a bit of rope or bungee cord round a bit of the pram and then round a door handle or something.
Are you sure you want that model though. Cos I think it would turn out to be a real pain in the bum stuffing it in the car and strapping it down all the time. You'd have to keep a sheet over your seats all the time or they'd me muddy and dog shitty in no time. You'd be limitesd on passengers. I'd pick something that fits in the boot or get a new car.
Esme, just a word of warning - make sure the car seat fits before buying the travel system. I had to get rid of my ford ka as literally no car seat was safe in it when tested (on the back seat). If you are happy to put a car seat in the front you may be ok.
It's perfectly legal but I wouldn't do it. I am very much a risk taker but this is one step too far for me! Even with bungees etc, you have not tested the arrangement in crash test situations and would not be able to predict what might happen.
I would get a smaller buggy. It's just not worth the risk.
I speak with the certainty of someone who had a cherry pie in a foil tin cannon into the back of my head during an accident. That bloody hurt so imagine what a 10-15kg pram would do...
I wouldn't do it and I would also think very carefully about a travel system. Unless you are going to walk hours and hours then I would get a sling & a smaller buggy or a Phil & Ted type thing. Travel systems really aren't all they are cracked up to be tbh.
I got a travel system for my 5 wk old. I use the maxi cosi car seat and the massive frame and thats it. At the ante-natal class the MW's advised to get a light fully reclinable buggy suitable from birth and not to waste money on a travel system, and they were probably right! Also the frames are bloody heavy and hard to manage if you end up with a C/S. When DD is older if I want to use the (currently totally redundant) buggy part I will have to put it in the car as it won't fit in the boot with the frame, and this is a fair size 5 door saloon. I knew all of this before I bought of course, but totally justified it in my head, hindsight is a great thing!
I had a minor crash at approx 20 miles an hour and a cuddly toy hurled from the back of the car to the front. A loose pushchair would kill someone. Unless you can strap it in with seatbelts and rope so it doesn't move an inch then don't risk it.
Agree with the others about travel systems not that great. I think I used the car seat on our 3 wheeler about once, realised it was a PITA and made the buggy weigh a tonne then just put DS in the forward facing lie flat position.
Udderly - it's funny isn't it. nearly everyone who has 'been there, done that' will say the same thing, but when it's you that#s pregnant you somehow feel you need one or it's different for you.... 6 months later you're posting the same thing to a newly pregnant mum