You wont feel the savings immediately, but you will over the life of the loan.
With biweekly payments, you pay half of the monthly mortgage payment every 2 weeks, rather than the full balance once a month. This is comparable to 13 monthly payments a year, which can result in faster payoff and lower overall interest costs.
For example, the biweekly mortgage payment process can pay off a $200,000 30 year fixed loan at 7% in approximately 24 years (75 months sooner than a standard payment plan), with a total of $68,925 in interest savings.
So, you save just about 6 years on the mortgage, and almost 70k in interest savings.
Paying your car loans weekly or biweekly is also very beneficial :)