Sounds like a plugged catalytic converter.
Sounds to me like the automatic transmission is not shifting.
There is problem with the electronic throttle and it puts a 30mph limit on your engine.
in most cars, when your car dont go over about 30mph, its a trans problem.
30mph
30mph
if it sounds like it comes from the front it is probably a wheel bearing.i had the same problem
30mph
30mph
30mph
Unless signs say otherwise, there are three speed limits for cars without trailers or caravans;- 30mph where there are streetlights. 60mph on single carriageway roads without streetlights. 70mph on motorways and duel carriageways without streetlights .
48.28032 kph ==
i think 30mph
around 30mph