Three robbers, dressed as Father Christmas

[Bassim]

I am wondering if my sentences are grammatically correct.

Three robbers, dressed as Father Christmas, rushed out of the bank, carrying plastic bags filled with the money. They got into a car parked on the opposite side of the street and drove off at high speed under the eyes of astounded passersby.

 

[emsr2d2]

I wouldn't use "under the eyes of".

... drove off at high speed to the astonishment of [watching] passersby.

 

[Rover_KE]

I'd say 'plastic bags filled with money'.

 

[GoesStation]

"Filled with the money" makes the reader wonder, "which money?" You can include the article if a previous sentence said something like "Terrified clerks shoved handfuls of cash into plastic bags." Otherwise, omit it.