Driving at night (SkyBerron)

A game in 549 characters of code for TweetTweetJam 5 You are driving at night, but something is wrong in your car... This game was made for #TweetTweetJam and contains only 549 characters of code, including art. The code is below: _set_fps(60)z,f,m,l,h=mid,120,64,20,0::s::x,y,r,s,t,p=m,110,0,2,0,{}pal(8,0,1)pal(4,1,1)for i=1,31do p[i]={x=4*i,y=0,v=.4+rnd(.3)}end::_::cls()t+=.01 s+=.001r,w=(r-s)%(2*l),flr(t)h=max(h,w)b=btn()x+=(b&2)/2-(b&1)y+=(b&8)/8-(b&4)/4 x,y=z(x,f),z(y,f)poke(0x5f5e,0x11)ovalfill(x-37,y-f,x+43,y+2,1)poke(0x5f5e,0xee)for i=0,5do u=m+l*(i-2.5)for j=0,5do v=2*j*l-r line(u,v,u,...