Where does “åka fast” come from?

åka fast (Swedish) comes from Swedish åka, from Old Swedish aka, from Old Norse aka, from Proto-Germanic akaną, from Proto-Indo-European h₂éǵeti, from Proto-Indo-European h₂eǵ- — to drive.

åka fast (Swedish): to get caught, to be busted (for a crime or the like)

Definitions

to get caught, to be busted (for a crime or the like)

Ancestry of “åka fast”, step by step

åka fast traces back through two separate lines of ancestry.

via Swedish åka

Step	Language	Word	Meaning
1	Swedish	åka	to go; to depart, to leave
2	Old Swedish	aka	to drive
3	Old Norse	aka	To drive
4	Proto-Germanic	akaną	to drive, sail, navigate; to ache
5	Proto-Indo-European	h₂éǵeti	to be driving
6	Proto-Indo-European	h₂eǵ-	to drive

via Swedish fäst

Step	Language	Word	Meaning
1	Swedish	fäst	fast
2	Old Swedish	faster	fast, firm
3	Old Norse	fastr	fast, firm, sticking fast to the spot; close,...
4	Proto-Germanic	fastuz	fixed, firm, secure

Every word from Proto-Indo-European h₂eǵ- →Every word from Proto-Indo-European h₂éǵeti →Every word from Proto-Germanic akaną →